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Powdery Mildew in Bigleaf Hydrangea
How to identify and treat powdery mildew in Bigleaf Hydrangea.
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Bigleaf Hydrangea care requirements
water
Water deeply and consistently during the growing season; keep soil evenly moist but not soggy. Reduce watering in winter.
soil
Prefers rich, well-draining, slightly acidic soil (pH 5.0–6.5); acidic soil produces blue flowers, neutral to alkaline produces pink.
light
Partial shade is best; morning sun and afternoon shade prevent wilting and fading of flowers. Avoid intense afternoon sun in hot climates.
symptoms
Symptoms to look for in Bigleaf Hydrangea
- fiber_manual_recordWhite powdery patches on leaves
- fiber_manual_recordDistorted new growth
- fiber_manual_recordPremature leaf drop
help
Common causes in Bigleaf Hydrangea
Caused by various fungal species. Spreads in warm, dry conditions with high humidity nights.
healing
How to treat powdery mildew in Bigleaf Hydrangea
Remove affected leaves. Apply neem oil, potassium bicarbonate, or sulphur-based fungicide. Improve air circulation.
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Preventing powdery mildew in Bigleaf Hydrangea
Space plants for good airflow. Avoid overhead watering. Choose resistant varieties.